Condensed Consolidated Statements of Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Nov. 30, 2016	Nov. 30, 2015	Nov. 30, 2016	Nov. 30, 2015
Statement of Comprehensive Income [Abstract]
Net loss	$ (1,452)	$ (1,048)	$ (2,207)	$ (754)
Other comprehensive loss, net of tax: Net change in cumulative translation adjustment	(55)	(60)	(48)	(42)
Total comprehensive loss	(1,507)	(1,108)	(2,255)	(796)
Less: Comprehensive income attributable to the noncontrolling interest	2	0	1	0
Comprehensive loss, attributable to Aehr Test Systems common shareholders	$ (1,509)	$ (1,108)	$ (2,256)	$ (796)